From 341a2f1ea3f3e34785c2f4f185c1af08b89bc63e Mon Sep 17 00:00:00 2001
From: terence tsao <terence@prysmaticlabs.com>
Date: Thu, 4 Nov 2021 11:48:09 -0700
Subject: [PATCH] Use ` math.MaxUint64` (#9857)

Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>
---
 beacon-chain/rpc/prysm/v1alpha1/debug/block.go | 3 ++-
 config/params/mainnet_config.go                | 4 ++--
 config/params/minimal_config.go                | 4 ++--
 time/slots/slottime_test.go                    | 4 ++--
 4 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/beacon-chain/rpc/prysm/v1alpha1/debug/block.go b/beacon-chain/rpc/prysm/v1alpha1/debug/block.go
index f65c46270..504e6dc1c 100644
--- a/beacon-chain/rpc/prysm/v1alpha1/debug/block.go
+++ b/beacon-chain/rpc/prysm/v1alpha1/debug/block.go
@@ -3,6 +3,7 @@ package debug
 import (
 	"context"
 	"fmt"
+	"math"
 
 	types "github.com/prysmaticlabs/eth2-types"
 	"github.com/prysmaticlabs/prysm/beacon-chain/core/helpers"
@@ -61,7 +62,7 @@ func (ds *Server) GetInclusionSlot(ctx context.Context, req *pbrpc.InclusionSlot
 		return nil, status.Errorf(codes.Internal, "Could not retrieve blocks: %v", err)
 	}
 
-	inclusionSlot := types.Slot(1<<64 - 1)
+	inclusionSlot := types.Slot(math.MaxUint64)
 	targetStates := make(map[[32]byte]state.ReadOnlyBeaconState)
 	for _, blk := range blks {
 		for _, a := range blk.Block().Body().Attestations() {
diff --git a/config/params/mainnet_config.go b/config/params/mainnet_config.go
index 48ae71f8a..8ab5a4575 100644
--- a/config/params/mainnet_config.go
+++ b/config/params/mainnet_config.go
@@ -65,8 +65,8 @@ var mainnetNetworkConfig = &NetworkConfig{
 
 var mainnetBeaconConfig = &BeaconChainConfig{
 	// Constants (Non-configurable)
-	FarFutureEpoch:           1<<64 - 1,
-	FarFutureSlot:            1<<64 - 1,
+	FarFutureEpoch:           math.MaxUint64,
+	FarFutureSlot:            math.MaxUint64,
 	BaseRewardsPerEpoch:      4,
 	DepositContractTreeDepth: 32,
 	GenesisDelay:             604800, // 1 week.
diff --git a/config/params/minimal_config.go b/config/params/minimal_config.go
index 23102ab6c..46d10ddb8 100644
--- a/config/params/minimal_config.go
+++ b/config/params/minimal_config.go
@@ -82,8 +82,8 @@ func MinimalSpecConfig() *BeaconChainConfig {
 	minimalConfig.GenesisForkVersion = []byte{0, 0, 0, 1}
 
 	minimalConfig.DepositContractTreeDepth = 32
-	minimalConfig.FarFutureEpoch = 1<<64 - 1
-	minimalConfig.FarFutureSlot = 1<<64 - 1
+	minimalConfig.FarFutureEpoch = math.MaxUint64
+	minimalConfig.FarFutureSlot = math.MaxUint64
 
 	// New Altair params
 	minimalConfig.AltairForkVersion = []byte{1, 0, 0, 1} // Highest byte set to 0x01 to avoid collisions with mainnet versioning
diff --git a/time/slots/slottime_test.go b/time/slots/slottime_test.go
index 303431970..2b516bcbe 100644
--- a/time/slots/slottime_test.go
+++ b/time/slots/slottime_test.go
@@ -416,8 +416,8 @@ func TestPrevSlot(t *testing.T) {
 		},
 		{
 			name: "max",
-			slot: 1<<64 - 1,
-			want: 1<<64 - 1 - 1,
+			slot: math.MaxUint64,
+			want: math.MaxUint64 - 1,
 		},
 	}
 	for _, tt := range tests {